Golf club



' June 9,' 1925.

W. DUNN GOLF CLUB Filed March 24. 1923 WITNESS. #15

Patented une 9, 1925.

cum-:1) STATES WILLIAM DUNN, or REnwoon CITY, CALIFORNIA;

GOLF CLUB.

Application filed March 24, 1923. Serial No. 627,296.

To all whom it may concern:

- Be it known that I, WILLIAM DUNN, a

subject of Great Britain, and a resident of Redwood City, San Mateo County, State of California, have invented a new and useful Golf Club, of which the following is a specification.

The invention relates to golf club heads and particularly to driver and brassie heads.

An object of the invention is to provide a metallic golf club head of the driver or brassie type.

Another object of the invention is to provide a metallic golf club head of the driver or brassie type having substantially the same weight and size as the wooden head now ordinarily used.

Another ob 'ectof the invention is to provide a metallic golf club head, in which the center of gravity of the head is raised above the vertical center of the striking face of the head.

The invention possesses other advantageous features, some of which with the fore going will be set forth at length in the following description where I shall outline in full that form of golf club head which I have selected for illustration in the drawings accompanying and forming part of the present specification. In said drawings, I have shown one form of head, but it is to be understood that I do not limit myself to that form, since the invention, as set forth in the claims, may be embodied in a plurality of forms.

In said drawings, Figure 1 is a front elevation of a golf club head embodying my invention.

Figure 2 is an underneath view of the golf club head.

Figure 3 is an end view of the golf club head.

Figure 4 is a cross section taken on the line 4-4 of Figure 1.

My invent-ion relates particularly to metallic heads for drivers and brassies. \Vooden heads have been used universally for this purpose, heretofore, and in making a metallic head, it is essential that the head be of substantially the same shape, when viewed by the player taking his stance as the wooden head and that it be of the same weight as the wooden head.

The club heads of my invention are made of an aluminum alloy which is sufficiently tough to stand the service for which the face 1.

clubs are used, but the weight of this alloy is such that if the clubs head was made in exactly the same manner as the wooden head, the metallic head would be too heavy.

Also; in a metallic head the center of gravity of the head would lie in a line passing through the vertical center of the striking This center is below the center of the golf ball when the club is appliedto the ball and it is an object of my invention to raisethe center of gravity of the club head so that it lies in the same plane as the center of gravity of the golf ball. To reduce the weight of the head and to raise the center of gravity of the head, I form the club with a concave sole 2 with the concavity extending from the toe to the heel of the head, but in order that the club may have definite ground contacting areas, I form the concavity of less width than the width of the sole, so that the flat or relatively flat ground contacting strips 3 and 4 are provided at the front and rear of the sole. The sole of the club is convex longitudinally so that these strips are convex. By making the width of the concavity less than the width of the sole, sharp lips do not occur at the front and rear of the sole, which would have a tendency to dig up the turf; but instead, flat areas are produced, which prevent the club from digging up the turf and cause it to position itself in the same manner as a wooden headed club having, substantially flat sole.

To further lighten the head of the club and position its center of gravity in the vertical plane lying in the axis of the shaft of the club, the rear face 5 of the club is provided with a concave recess or groove 6.

To further lighten the head of the club,

the top face 7 of the club head may also befrom the toe to the heel of said head and bringing into relief ground-contacting strips adjacent the front and rear faces, a longitudinally convex rear face formed with a longitudinally extending groove and a neck integral with said head to receive a club shaft.

2. In a olf club head comprisin a single solid metallic body, a longitudinal yconvex sole provided with a straight bottomed groove of less width than the sole and extending lon 'tudinally from the toe to the heel of sai head and bringing into relief ground-contacting strips adpcefit the front and rear faces, a longitudinally convex rear 1:!

a point opposite the point of. proper con- 20 tact with the ball and the rear face groove bein proportioned to shift the center of gravity forwardly into the vertical plan passing thru the axis of the neck,

In testimony whereof, I have hereunto set 25 my hand.

WILLIAM DUNN. 

